Development of cataract after trabeculectomy

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Abstract
Cataract progression after trabeculectomy was investigated in a study of 47 eyes with exfoliative glaucoma (ExG) and in 20 eyes with primary open‐angle glaucoma (POAG). Cataract progression was assessed from the need for cataract extraction, deterioration of visual acuity by ≥ 2 Snellen lines, myopic change in the refraction and increase in the lens opacity value, measured with a Lens Opacity Meter 701. Measurements were made 6 and 12 months after trabeculectomy and at the follow‐up visit at 26 + 11 months. ExG, age, hypotony (IOP ≤ 5 mm Hg) lasting ≥ 5 days and early postoperative IOP rise ≥ 30 mm Hg were observed to be risk factors for cataract progression. In pairwise analysis of 14 patients, in which the unoperated eye served as the control, a myopic change of refraction was the most frequent indicator for a change in the structures of anterior segment, possibly indicating cataract progression.